corporate citizenship presumption

where a corporation is created by the laws of a State, the legal presumption is, that its members are citizens of the State in which alone the corporate body has a legal existence; and that a suit by or against a corporation, in its corporate name, must be presumed to be a suit by or against citizens of the State which created the corporate body; and that no averment or evidence to the contrary is admissible, for the purposes of withdrawing the suit from the jurisdiction of a court of the United States.